Pressure and temperature effects on the phase transition from a dense droplet to a lamellar structure in a ternary microemulsion
Pressure and temperature effects on the phase transition from a dense droplet to a lamellar structure in a ternary microemulsion
复制标题
压力和温度对三元微乳液中致密液滴到层状结构相变的影响
DOI：
10.1063/1.481695
复制
发表时间：
2000
影响因子：
4.4
通讯作者：
Y. Amemiya
中科院分区：
文献类型：
--
作者：
H. Seto;D. Okuhara;Y. Kawabata;T. Takeda;M. Nagao;J. Suzuki;H. Kamikubo;Y. Amemiya
对由 AOT [双(2-乙基己基)磺基琥珀酸钠]、水和正癸烷组成的三元微乳液进行小角 X 射线散射 (SAXS) 研究，以阐明随着压力和温度的增加，相行为和从致密液滴到层状结构的相应结构转变的特征。将水和癸烷的体积分数固定为相等，并将AOT占总体积的体积分数(φs)选择为0.209和0.230，以便与小角中子散射(SANS)获得的结果进行比较。压力在 1 至 800 bar 之间变化，温度控制在 20、25、29 或 33°C。在所有应用条件下，观察到从液滴结构到层状结构的相变。 SAXS 剖面分析结果表明，随着压力的增加，液滴之间的短程粘附力变得更强。
A small-angle x-ray scattering (SAXS) study of a ternary microemulsion composed of AOT [sodium bis(2-ethylhexyl) sulfosuccinate], water and n-decane was undertaken in order to clarify the phase behavior and the feature of the corresponding structural transition from a dense droplet to a lamellar structure with increasing pressure and temperature. The volume fractions of water and decane were fixed to be equal and the volume fraction of AOT against the whole volume (φs) was selected to be 0.209 and 0.230 in order to compare results with those obtained by small-angle neutron scattering (SANS). The pressure was varied between 1 and 800 bar under controlled temperature at 20, 25, 29, or 33 °C. Under all conditions applied, the phase transition from the droplet structure to the lamellar structure was observed. The results of analysis of the SAXS profiles indicated that the short-range adhesive potential between droplets becomes more intense with increasing pressure.
H.Seto：“采用新型高压单元和小角度 X 射线散射装置的组合，在三元微乳液中实现压力诱导相变”Jpn.J.Appl.Phys.38。
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--